Black & Decker has not been able to help. The warranty is over, so they
told me to buy a new one. They said they don't have records of what
parts were used in the charger. I've looked high and low for someone
who might have a schematic, but no luck.
Here's what I'm pleading for:
I need someone who has the PS160 charger to look at the circuit board
and tell me the colors of the bands on resistor R2 (there is a label
visible under the resistor). It's the one right next to the LED. My
resistor is burnt and I can't see the middle band(s) at all. It looks
like one end is a brown band, and the other is likely blue but might be
green. Can't be sure because of the damage.
As always, any help is greatly appreciated.
JC
<purple...@gmail.com> wrote in message
news:1155161287.5...@75g2000cwc.googlegroups.com...
Second thought. Be sure it's a resistor, not a diode.
Third. Get a power supply plug from www.sciplus.com and guess at
charging times.
Fourth, pitch the drill in the scrap and buy another one from
www.harborfreight.com ; I have a 12 volt Drill Master, and really
worth the $15 I paid for it, half price sale.
--
Christopher A. Young
You can't shout down a troll.
You have to starve them.
.
<purple...@gmail.com> wrote in message
news:1155161287.5...@75g2000cwc.googlegroups.com...
If you bought the original with a credit card, it's possible the
original warranty was extended by an extra year. Or can you buy a B&D
tool that uses an identical charger and look at it?
If a resistor blew, I would expect the power transistor or triac
associated with it to have blown as well. I hope it's a discrete part
and not built into an IC.
> I may be able to help. My PS 160 charger is busted too working only
> every once in a while and I took it apart. Don't know much about
> electronics but everything in mine looks okay. The bands on the
> resistor closest to the LED is from top to bottom Gray-Red-Gold-Gold.
I believe that's a 0.82 ohm resistor,probably a fusible one.
> This appears to be slightly larger than the resistor next to it. If
> you want I can send you a closeup macro picture of the board. Private
> mail me at wang...@att.net and I'll attach pic.
>
--
Jim Yanik
jyanik
at
kua.net
Read colors in the opposite direction:
http://www.elexp.com/t_resist.htm
52 ohms 5% accuracy
Those chargers usually don't use transistors or traics. Just a
transformer, diode bridge and sometimes a dropping resistor.
I admit I've never seen the inside of a B&D charger, only DeWalt and
Ryobi units, but unless the battery pack contains some extra circuitry,
which I doubt it does, being a budget brand, a fast charger built like
that will be rough on the batteries.
A burned resistor I would guess could be due to a shorted cell in the
battery pack. Important to measure the battery voltage before doing
anything else. The pack has 10 cells. If the voltage doesn't get to
near 12 volts or is below 10 a cell is probably shorted.
I just looked it up and see it is a 12 volt charger. Uses a wall plug
transformer. And see others commenting that there is only two resistors
and they have the same problem of one burning out.